Efficient Persistent Luminescence Tuning Using a Cyclodextrin Inclusion Complex as Efficient Light Conversion Materials

Abstract

Developing an appropriate method to broaden the color of long persistent luminescence materials has important scientific significance and practical value but remains a great challenge. Herein, we have developed a unique strategy to fine-tune the persistent luminescence using the inclusion complex of rhodamine 6G with (2-hydroxypropyl)-β-cyclodextrin as efficient light conversion materials. The emitting color of the novel persistent luminescence material could be tuned from green to orange by changing the concentration of the light conversion agent. Furthermore, afterglow decay measurements showed that the initial afterglow brightness is 9.65 cd/m 2 , and the initial afterglow brightness gradually decreased as the cyclodextrin inclusion compound coating increased. This design concept introduces a new perspective for broadening the luminescence color of afterglow phosphors, which may open up new opportunities for persistent luminescence materials toward many emerging applications.

Recent Progress in Inorganic Afterglow Materials: Mechanisms, Persistent Luminescent Properties, Modulating Methods, and Bioimaging Applications

“…[ 229 ] Hou and co‐workers reported an efficient PL tuning by coating cyclodextrin complex of rhodamine 6G with (2‐hydroxypropyl)‐β‐cyclodextrin on the surface of SrAl 2 O 4 :Eu 2+ ,Dy 3+ . [ 230 ] The cyclodextrin complex was used as light conversion material. Under the excitation of 365 nm, there are two emissions, one is from 4f 6 5d 1 to 4f 7 transition of Eu 2+ ions located at 525 nm (green), the other is the one at around 580 nm (red) from cyclodextrin complex.…”

Simple Preparation of Multifunctional Luminescent Textile for Smart Packaging

“…The antibacterial, superhydrophobic, and flame-retardant textiles are examples of functional textiles that were developed for nonaesthetic goals. − Textiles that respond to external stimuli like luminous and thermochromic textile materials are also known as smart textiles. Long-lasting phosphorescence has been a desirable phenomenon for the preparation of smart luminescent textiles. − The long-lasting phosphorescence compounds work by absorbing light into their crystal constituents. The phosphorescence compound’s trap ingredient subsequently captures the light energy.…”

Color-tunable persistent luminescence hybrid materialsviaradiative energy transfer

“…Since their preparation methods are all spin coating, the application in many scenarios is restricted. Zhao dan et al used the inclusion complex of rhodamine 6G with (2hydrosypropyl)-β-cyclodextrin as light conversion materials to fine-tune the persistent luminescence, from green to orange 28 . However, small-molecules organic dyes have fast dye photodegradation, which hinders their practical application.…”

“…Zhao dan et al used the inclusion complex of rhodamine 6G with (2-hydrosypropyl)-b-cyclodextrin as light conversion materials to fine-tune the persistent luminescence from green to orange. 28 However, small-molecule organic dyes undergo fast dye photodegradation, which hinders their practical application. Polymer fluorescent dyes (PFDs) are functional polymers which have a chromophoric center within their structure.…”